By now, you should at least understand what the numbers on the binoculars mean when you see them: magnification and lens size. The model numbers of binoculars essentially tell you their power (magnification) and size (lens diameter). The numbers displayed on the binoculars indicate the configuration of the binoculars, i.e. the magnification and lens size.
The model numbers on binoculars indicate the pair’s magnification strength and the diameter of the lens. The first number is the magnification multiplier. The second number is the diameter of the lens in millimeters. So a 10×50 pair of binoculars has a 50 mm lens and a 10x magnifying strength.
Lens Size (Aperture) The number after the magnification is called the lens size, also known as the aperture. The second number after the x indicates the diameter of the objective in millimeters, which determines the amount of light collected and the size of the field of view. Of these numbers, my example is “8×42”, the second represents the lens diameter of the main lens in millimeters.
For example, in 8×42 binoculars, “8” is the magnification factor and “42” is the diameter (in millimeters) of the objective (the lens closest to the object being viewed). The magnification on binoculars is expressed as a combination of two digits, such as 8×40 or 10×25. The first number (8 in our case) refers to the magnification of the binoculars.
What the Magnification Numbers on Binoculars Signify
The specified magnification (the first number in the number x number formula) indicates how much larger the image seen through the eyepiece is than that seen by the naked eye. The first number, often called the magnification, indicates the power, or how much the observed image has been magnified. Binocular magnification is sometimes called magnification, and I’ll use the term magnification.
The magnification power of binoculars is how far an object can be brought closer to your eyes when you look through binoculars, or how many times it can be magnified by binocular optics. The higher the magnification, the closer the object will appear when viewed through these binoculars. Generally, binoculars with 6-10x magnification are easier to use, but for birdwatching, detecting moving objects, and minimizing jitter, 8-10x magnification is best. If you are considering magnifications above 12x, you may want to invest in a stand or tripod that will hold the binoculars for you.
For most uses, you can’t go wrong with 10×42 binoculars because they offer a good balance between good field of view and magnification. Binoculars with an objective size larger than 40mm are most often full size binoculars.
10×50 binoculars will have a lens size of 50mm, 7×35 will have a lens size of 35mm, etc. Wider lenses will usually increase the size of the binoculars as well. For example, 8×42 and 10×42 binoculars have the same aperture, but 8×42 binoculars will have a wider field of view due to 8 times less power.
For example, if you have numbers like 10×40 or 8×42; this means that the object you want to see with binoculars will appear 10 or 8 times closer than it would to the naked eye. For example, if you have data like 20x50mm or 8x42mm; such as 20x50mm or means that the object you want to see through the binoculars will appear 20 or 8 times closer and larger than to the naked eye. For example, binoculars with a 6.5 degree field of view will give you an image of approximately 341.25 feet at 100 yards.
Broader Views Require Lower Magnification
It should be noted that if you want to view or cover a large area, you need to purchase binoculars with a lower magnification. Binoculars with 8×40, 8×42, 8×70, 8×32 or even 8×21 provide the same magnification. The 10/30×25 binoculars come with a 10x lens and a 30x lens.
For example, 10-60×50 means the binoculars have 10x to 60x magnification, which means it can magnify objects 10x to 60x. 7 x 50 binoculars magnify the image 7x so when you look through the eyepieces you will see objects 1/7th away from where they actually are. 9 X 40 means that any binoculars with that number can easily magnify objects 9 times. This number represents the minimum viewing distance, or how close the object is to the binoculars to still be able to focus on the object.
This is the amount of a large area that the binoculars can capture when viewed through it. The field of view is the area that can be observed with binoculars at a distance of 1000 meters and can be expressed in either meters or degrees. The data sheet of the binoculars indicates Field of view 122M/1000M, which means that at a distance of 1 km you can observe a field of 120 meters.
Common Binocular Conventions
Binoculars are usually marked with a series of numbers, such as 7×35 or 8×40, the first number indicates the magnification (how close the object is to you, 5x, 7x, 10x), while the second number is the measured The size of the objective lens. The number of millimeters through the lens. We found that binocular numbers provide the magnification and size of binocular lenses. Together, these numbers indicate how much the object will appear in the binoculars, and how bright the image is relative to the amount of light available.
For example, the image in 8×50 binoculars will be clearer, sharper and brighter than in 8×25 binoculars due to the lens diameter. The lens of binoculars has a certain diameter, it is also called aperture, the diameter is indicated in millimeters, hence 42.
It is worth noting that the magnification factor of binoculars is often called the magnification factor, and the diameter of its lenses of its lens is aperture or light diameter. In binoculars, 10x magnification simply means that objects seen in the field of view appear 10 times larger (or closer) than those seen by the naked eye.